{"component":{"type":17,"accent_color":3123338,"components":[{"type":10,"content":"-# WikiRNG · Roll of 10/16/2026 · by [TheAbysswalker](https://wikirng.com/u/TheAbysswalker)"},{"type":10,"content":"## [Doubling space](https://wikirng.com/roll/ND74ip2KDY)\n*Metric space with double measurement*"},{"type":10,"content":">>> In mathematics, a metric space X with metric d is said to be doubling if there is some doubling constant M \\> 0 such that for any x ∈ X and r \\> 0, it is possible to cover the ball B(x, r) = {y \\| d(x, y) \\< r} with the union of at most M balls of radius ⁠r/2⁠."},{"type":14,"divider":true,"spacing":1},{"type":10,"content":"### 🟩 Notable · 68,983 SP\n-# Top 31% · ❤️ 1"},{"type":10,"content":"*balls of mathematics is a metric space.*"},{"type":14,"divider":true,"spacing":1},{"type":10,"content":"🟦 🧰 **Uses** · Obscure · +25,639 SP\n-# Has a Uses or Applications section.\n🟦 🧮 **Equation** · Obscure · +17,503 SP\n-# Has a math formula.\n🟩 🧩 **Isogram** · Notable · +6,275 SP\n-# No letter repeats (8+ letters).\n🟩 ➗ **Fractions** · Notable · +5,888 SP\n-# Shows a fraction.\n🟩 📑 **JSTOR** · Notable · +3,588 SP\n-# Links to JSTOR.\n🟩 🔓 **Free to Read** · Notable · +1,731 SP\n-# Cites a source that is free to read.\n-# +17 more badges"},{"type":14,"divider":true,"spacing":1},{"type":1,"components":[{"type":2,"style":5,"label":"View roll","url":"https://wikirng.com/roll/ND74ip2KDY"},{"type":2,"style":5,"label":"Read on Wikipedia","url":"https://en.wikipedia.org/wiki/Doubling_space"}]},{"type":10,"content":"-# Article text from Wikipedia, CC BY-SA 4.0"}]}}